PROCESS AND INSTALLATION FOR PRODUCING CALCIUM HYDROXIDE

摘要

The invention relates to a process of producing calcium hydroxide by hydrating burnt lime with stoichiometrically dosed water, to which an excess of 15 ... 160 % is added, depending on the burnt lime temperature. The hydration is carried out at a temperature of 50 ... 60° C for 12 min. The reaction product has a granulation of up to 2 mm and is debound with water, thus producing a stable concentrated suspension containing 330 ... 360 g CaO/ l, with an increased dispersion and high reactivity. The installation for carrying out the process comprises feeding means, a reactor and separating means. The reactor itself (5) comprises steel bars welded 5 mm apart. The inner worm (6) provides the continuous separation of the calcium hydroxide particles. A system for the waste separation (18, 19) and washing (13) is mounted at the discharge end of the reactor.